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    <title>Document</title>
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<body>
    <ul class="nav nav-tabs">
        <li class="active">
            <a href="#">苹果</a>
        </li>
        <li class="dropdown">
            <a href="#" class="dropdown-toggle" data-toggle="dropdown">小米
                <span class="caret"></span>
            </a>
            <ul class="dropdown-menu">
                <li>
                    <a href="#">小米手机</a>
                </li>
                <li>
                    <a href="#">小米电脑</a>
                </li>
                <li>
                    <a href="#">小米平板</a>
                </li>
            </ul>

        </li>
        <li>
            <a href="#">华为</a>
        </li>
    </ul>

    <ul class="breadcrumb">
        <li class="active">
            <a href="#">苹果</a>
        </li>
        <li>
            <a href="#">小米</a>
        </li>
        <li>
            <a href="#">华为</a>
        </li>
    </ul>
    <div class="navbar navbar-default navbar-fixed-bottom">
        <div class="navbar-header">
            <div class="navbar-brand">极客营</div>
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        <ul class="nav navbar-nav">
            <li>
                <a href="#">Java</a>
            </li>
            <li>
                <a href="#">PHP</a>
            </li>
            <li>
                <a href="#">HTML5</a>
            </li>
        </ul>
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